C 3500 Truck 2WD V8-6.6L DSL Turbo VIN 1 (2002)
Pressure Plate: Technical Service Bulletins
M/T - Revised Pressure Plate Adjustment Procedure
Bulletin No.: 04-07-31-001
Date: January 21, 2004
SERVICE MANUAL UPDATE
Subject:
Revised Clutch Pressure Plate Adjustment (Off-Vehicle (6.0L, 6.6L, 8.1L Only))
Models:
2001-2004 Chevrolet Silverado
2001-2004 GMC Sierra
with 6.0L, 6.6L or 8.1L Engine
This bulletin is being issued to add the Clutch Pressure Plate Adjustment (Off-Vehicle (6.0L, 6.6L, 8.1L only)) procedure to the Clutch sub-section of
the Service Manual.
The following information has been updated within SI. If you are using a paper version of this Service Manual, please make a reference to this bulletin
on the affected page.
Clutch Pressure Plate Adjustment (Off-Vehicle (6.0L, 6.6L, 8.1L Only))
Important:
^
Use the following procedure when replacing ONLY the clutch disc. The self adjusting clutch pressure plate/cover assembly must be "reset" back
to the "unworn" position in order to work properly. Failure to "reset" the cover assembly results in the inability to achieve full clutch release and
clutch slippage under full torque.
^
The 6.6L engine uses a "potted" style flywheel and the cover stamping is much shorter to accommodate the flywheel. As a result, to "reset" this
clutch, the cover MUST be evenly supported at all six bolt holes in order to keep from bending the cover and to unload the adjuster ring allowing
the clutch to be "reset."
1.
Place the clutch pressure plate and disc, flange side down, on a press.
2.
Compress the pressure plate diaphragm spring fingers until tension is released from the stepped adjusting ring.
3.
Using 2 screwdrivers or other suitable tools, place them against 2 of the 3 stepped adjusting ring tension spring stops (1), just ahead of the
adjusting ring tension springs.
